Home / 280,239.14-386,739.34-152,921.72

Finding the Fourth Proportional to 280,239.14, 386,739.34 and 152,921.72

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Solution

The fourth proportional to 280,239.14, 386,739.34 and 152,921.72 is: 211,037.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,239.14 : 386,739.34 = 152,921.72 : x
  2. Step 2: Convert to fraction form
    280,239.14/386,739.34 = 152,921.72/x
  3. Step 3: Cross multiply
    280,239.14x = 386,739.34 × 152,921.72
  4. Step 4: Simplify right side
    280,239.14x = 59,140,843,130.77
  5. Step 5: Solve for x
    x = 59,140,843,130.77/280,239.14
  6. Step 6: Final answer
    x = 211,037.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.